Fine-grained pyrite in some Chinese coals. Issue 4 (July 2016)
- Record Type:
- Journal Article
- Title:
- Fine-grained pyrite in some Chinese coals. Issue 4 (July 2016)
- Main Title:
- Fine-grained pyrite in some Chinese coals
- Authors:
- Wang, Wenfeng
Sang, Shuxun
Bian, Zhengfu
Duan, Piaopiao
Qian, Fuchang
Lei, Shaogang
Qin, Yong - Abstract:
- Fine-grained pyrite in some Chinese coals has been investigated, with analysis by optical microscopy and a scanning electron microscope equipped with energy dispersive X-ray spectrometer illustrating that the interaction between mineral and organic matters results in the irregular pyrite crystal present in coal. When considering the co-existing carbon, the density of fine-grained pyrite in coal is lower than that of mineral pyrite. Organic sulfur and pyritic sulfur in coal can be converted into each other under the favorable conditions. However, the fine-grained pyrite crystal pattern is still detected when the S/Fe ratio increases to 2:1, meaning that the fine-grained pyrite shifts from dissemination to crystallization. Fine-grained pyrite in coal has a strong activity and its surface is susceptible to be oxidized. Oxidized fine-grained pyrite usually forms sulfate (mainly gypsum), and sometimes may be converted to marcasite. Fine-grained pyrite in coal, when their granularity is small enough, may be chemically associated with organic components by non-pyritic Fe–S bond rather than physically embedded in coal matrix. So, it is not suitable to express the mineral using the FeS2 formula.
- Is Part Of:
- Energy exploration & exploitation. Volume 34:Issue 4(2016)
- Journal:
- Energy exploration & exploitation
- Issue:
- Volume 34:Issue 4(2016)
- Issue Display:
- Volume 34, Issue 4 (2016)
- Year:
- 2016
- Volume:
- 34
- Issue:
- 4
- Issue Sort Value:
- 2016-0034-0004-0000
- Page Start:
- 543
- Page End:
- 560
- Publication Date:
- 2016-07
- Subjects:
- Coal -- fine-grained pyrite -- occurrence -- organic matter -- interaction
Power resources -- Periodicals
333.79 - Journal URLs:
- http://eea.sagepub.com/ ↗
http://www.multi-science.co.uk/ ↗ - DOI:
- 10.1177/0144598716646033 ↗
- Languages:
- English
- ISSNs:
- 0144-5987
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 6645.xml